forkner



H A. FORKNER.

DEMOUNTABLE RIM SPREADER,

APPLICATION mm OCT. 12. 19w.

'ntuniwi May 27, 1919.

till To all whom it may concern:

Be it known that l, :HENKY A. FORIEKNEHY a citizenof the United States icesic ng at oplin, in the county of Jasper one. State of Missouri; have, invented certain new and; useful Improvements in Deinountzihleiiim Spreaders, of which. the foiio'wing ii" s specification My invention relates to apparatus adept" ed for expanding :i dexnountebic rim, o" the some has been contracted, for ti tion ofthe tire casing or shoe, Whiie not necessarily restricted to this use.

An important object of the invention to provide apparatus of the above mew tioned character, including per ,s which may he operated by the ordinary type of mutomobile jack.

A "further object of the invention is to provide :imperetus of the shove inenti necl character, formed. of few ports which may he collapsed in e compact men cry for the purpose of transportation.

Other objects and ,urlvontziges oi the invention will. be apparent durihg; the course of the following description.

In the accompanyingdrawings forming a part of this specification and in. which like numerals are employed to designate like parts throughout the some,

Figure l is a side elevation of embodying my in use,

Fig. 2 is a, similar View of the apparatus removed from the rim, {inch Fig. 3 is en edge elevation of the appsrates.

In the drawings, wherein for the purpose of illustration is shown it preihrrecl eml5 oiliment of my invention, the numeric :7 (lo notes a. metallic demountahlc rim, which is cut or split transversely at (3. "ilhis run is provided with hinges 7, for enge ment with the edges or bonds of it the cos shoe 8, as is Well known.

iy expending apparatus coin" es :1. plate or base 3 curved iongituiinmlly to ep' 'isrutus invention, shomng some conform to the rim 7 and provicieer at its edges with flanges 10 for the reception therebetwecn of the rim '7. The rte or base 9 is provided with .longit-utliiisily tending ribs or flanges 11., provided near their ends "with apertures for the reception of pivot elements or bolts 1" shown. The numeral 13 desigiietes arms or corresponding encls oi" which ggiroj ect 021 of Letters lire twi 153, 191?. Serial lilo. 196,173.

longitntliinilfv tocouforn'i to the curvziturc oi" the rim 7 and provided with to receive thcrebetwcen the rim 7. The heads .1 are provided with flanges or ribs 16, spaced. the reception. thercbet-Ween off the ends of the urine 13, which. are pivotetl. thereto by in .ne of pivot elen'icuts or bolts 1.7 as sl n The heads M are provided upon. the. inner cucls with flat feces 18 to contact with the ends of the relatively movable parts, of on automobile jack 19, of any Well known or preferred construction. i 'ihis jack is shown us comprising :i stencie'rol 20., provided at one end with at base or foot 21. contacting with one face 18 Hawiug screw-threaded engagement Within the standard 520 is s lift screw having a head sii'i'vele-il thereto, :uml contacting; with. the face 153. The screw is engaged by it beveled gear 23, iuleptecl to reciprocate the sun e and this bevel gear is driven by a sccoml hovel gear receiving its rotation from any suitul'iie means.

In the use of the apparatus, after the rim *7 arranged inwardly of the other end, in overlappingrelation, and the tire casing or shoe 8 is wronged upon the rim, the apperm tus is placed Within the rim, with the base and. heads 14:, contacting" therewith, as We. in Fig. 1. Upon the operation of the incl; 1.9, it is obvious that the howls 14 will he HIOVGll uwuy from. each other, ti). reby ex pantie. the rim 7 until the o1 eilspping' ,osoi ere egztin brought into clincment, and secured in such alinement by the usual means. it is obvious that the epperw tus will dispense with the use of hammering and pryii which is ordinarily necessary in expemjiin "'1 type of rim.

lit is to be understood that the my inventi e herewith is to be it as 2!- preferred example of the seine en iii various ohunges in the shape, size and arrangement *3]? parts may he resorted to Without departing from the spirit of the intention or the scope oi the enhrm of shown and described -eci my invention, Ii

pivot elements or bolts 12,

flanges 1.5, V

t is collapsed whereby one end thereofis ELM? Y ml

ahle in comprising a base to contact with the inner side of the rim, arms pivotally connected with the base, heads adapted to contact with the opposite-side of the inner portion of. the rim at spaced-points and pivotally connected with the arms, and means arranged between the heads to move them away from each other. I V

2. Apparatiis of the character described, comprising a base to contact with the rim, arms pivotally connected with the base,

a heads pivotally connected with the arms to and having substantially flat approximately parallel faces formed upon the inner ends thereof, to engage with the relatively reciprecatory elements of a jack.

d. Apparatus for expanding a demountahie rim; including. an approximately triangnlar'structure. to contact with the rim at three points said structure including a neoaevc base to contact with. the rim, movable ,arms

connected with the base and adapted to be moved laterally with relation thereto a pair of heads carried by the opposite ends of the arms to contact with the rim at spaced points, andnieans to move said opposite ends of the arms away from each other.

5. Apparatus for expanding a de'mountable rim, comprising a pair of angularly arranged arms, each arm being substantially longer than the radius of the rim whereby its opposite ends may be disposed adjacent opposite portions of the rim; a base to contact with the rimand having pivotal connections with corresponding ends of the arms; a'pair of heads pivotally' connected with the opposite corresponding ends of the arms to contact with the rim; and means disposed between the heads to move them away from each other, said means enacting with the angularly arranged arms to constitute the base of a triangle formed by said arms and means,

In testimony whereof I affix my signature in presence of two witnesses.

HENRY A. FORKNER.

"Witnesses Err-inn WRIGHT, J. A. SNYDER. 

